package huanfuan.demo.design.event;

import huanfuan.demo.design.LotteryResult;
import huanfuan.demo.design.event.listener.EventListener;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @Author huanfuan
 * @Date 2022/1/10 16:52
 * @Version 1.0
 */
public class EventManager {


    Map<Enum<EventType>, List<EventListener>> listeners = new HashMap<>();


    public EventManager(Enum<EventType>... operations){
        for (Enum<EventType> operation:operations){
            this.listeners.put(operation,new ArrayList<>());
        }
    }


    public enum EventType {
        MQ, Message
    }



    /**
     * 订阅
     * @param eventType 事件类型
     * @param listener  监听
     */
    public void subscribe(Enum<EventType> eventType, EventListener listener){
        List<EventListener> users = listeners.get(eventType);
        users.add(listener);
    }



    /**
     * 取消订阅
     * @param eventType 事件类型
     * @param listener  监听
     */
    public void unsubscribe(Enum<EventType> eventType, EventListener listener) {
        List<EventListener> users = listeners.get(eventType);
        users.remove(listener);
    }



    public void notify(Enum<EventType> eventType, LotteryResult result){
        List<EventListener> users = listeners.get(eventType);
        for (EventListener listener :users){
            listener.doEvent(result);
        }
    }









}
